Table 2.
Univariate Analysis of 221 Patients with curative gastrectomy
| Variables | Median survival (month) | p value |
|---|---|---|
| Sex | 0.824 | |
| Male | 44.0 | |
| Female | 41.0 | |
| Age (years) | 0.482 | |
| ≥ 65 | 41.0 | |
| < 65 | 42.0 | |
| Grade | < 0.001 | |
| Well or moderately differentiated | 61.0 | |
| Poorly differentiated | 36.0 | |
| Location | 0.405 | |
| Lower | 40.5 | |
| Middle | 45.0 | |
| Upper | 50.0 | |
| T stage | < 0.001 | |
| T1 | 64.0 | |
| T2 | 59.0 | |
| T3 | 41.5 | |
| T4 | 25.0 | |
| N stage | < 0.001 | |
| N0 | 60.0 | |
| N1 | 47.0 | |
| N2 | 31.0 | |
| N3 | 18.5 | |
| TNM stage | < 0.001 | |
| I | 62.0 | |
| II | 47.0 | |
| III | 26.0 | |
| LN | 0.895 | |
| < 15 | 44.0 | |
| ≥ 15 | 41.5 | |
| LNR | < 0.001 | |
| 0 | 60.0 | |
| 0–0.13 | 47.0 | |
| 0.13–0.4 | 35.5 | |
| > 0.4 | 17.0 | |
The depth of primary tumor invasion (T stage), classification of regional metastasis lymph nodes (N stage) and TNM stage were based on the 7th edition TNM staging system; LN: number of lymph nodes examined; LNR: ratio between the positive lymph nodes and the total number of lymph nodes examined